Thanks cav_scout_tj, where NW of Austin are you. 6" shot into water jugs.Ĭav_scout_tj wrote:The 338 specter is an interesting beastie, you have some weight range from 180gr to 300gr. The 338 Spectre is a wildcat cartridge, with no SAAMI published specs, and at the time of this writing, nothing has been published on C.I.P’s website. 223 Remington, and bares a resemblance to the little-known 9x39mm cartridge chambered for the Russian Vintorez assault rifle. Based on a 10mm Magnum Case (Not 10mm Auto) necked down to accept 338 caliber bullets, this is a potent and versatile cartridge for any AR or Bolt gun. Trimming the 10mm Mag brass to length was easy enough. Starline 10mm Auto brass does an excellent job. Overall loaded length is similar to the ubiquitous 7.62 x 39mm. 1 0 0 Josh Pendt, J1911 in 9x25 dillon, Trying to push 125gr 9mm bullets to 1800fps and even 2000+fps will really do a number on the lifespan of brass. The last is so we know what diameter to make the mandrel. 338 Spectre cartridge is based on the Starline 10mm Magnum case. We will need to know the desired trim length, and either the bullet diameter or a couple sized sample cases. My barrel was a stub, thats the left over from making a nice 20" 308 barrel.Īs for how it sounds suppressed, still waiting my my AAC cyclone-K, then I will be happy to report on it.ġ10 Vmax expanded to. 338 Lapua Case Length Gauge & Shell Holder. While the 300 Blackout has great muzzle velocity then the 338 Spectre, the 338 Spectre has more favorable. Be smart at the beginning and it will save you tons of time. The 338 Lapua Magnum has a case length of 2. I think most of the troubles people have, are from trying to make carbine position gas ports work with subsonics. Turned the gas down a little and its been great. I shot some hot supersonics with the block set to subsonic, it ripped the rim off and left the case in the chamber. Mine is 9.5", which is on the shorter side. I have an adjustable block, but some have had good luck with a normal block and a gas port at like. 338 Spectre 4 F 78.25 28 - 4 means: Dimensions from Manufacturers or Designers drawing or from accepted standard such as SAAMI or CIP. Yes you need pistol port to run subsonics. I already reload for 308 so I got lots of 30cal bullets and they are much cheaper and with a far wider variety than 338. The 338 specter is an interesting beastie, you have some weight range from 180gr to 300gr. 6.8 SPC magazines are not as common as 5.45x45mm mags, and they typically only hold 25 rounds for a mag that is the same size as a standard 30 round AR-15 mag.
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